Con la tecla Ctrl presionada, pulsa el signo menos para reducir el tamaño del blog.

Si eres Autor prueba la opción Nueva Entrada. Utiliza Chrome para ver el blog completo.

Los aficionados ya pueden escribir sobre astronomía. Date de alta como Autor en Universo Mágico Público.

Comunidades de Astronomía en Google Plus: Universo Mágico - Astronomy Lab - Space Roads - Space World - Astronomy Station

Grupos de Astronomía en en Facebook: Astronomy & Space Exploration y Universo Mágico

The centre of the Milky Way


The centre of our Milky Way galaxy is located in the southern constellation Sagittarius (The Archer) and is "only" 26,000 light-years away. On high-resolution images, it is possible to discern thousands of individual stars within the central, one light-year wide region. Using the motions of these stars to probe the gravitational field, observations over the last decade have shown that a mass of about 3 million times that of the Sun is concentrated within a radius of only 10 light-days of the compact radio and X-ray source SgrA* (Sagittarius A) at the centre of the star cluster. This means that SgrA* is the most likely counterpart of the black hole believed to exist at the centre of our Galaxy.

This image was obtained in mid-2002 with the NACO instrument at the 8.2-m VLT Yepun telescope. It combines frames in three infrared wavebands between 1.6 and 3.5 µm. The compact objects are stars and their colours indicate their temperature (blue ="hot", red ="cool"). There is also diffuse infrared emission from interstellar dust between the stars.

Credit:
ESO

No hay comentarios:

Publicar un comentario

Comentar es un incentivo para el Autor